Motor-driven tire-pump.



JLG. JOHNSON. MOTOR DRIVEN TiRE PUMP.

Rm 1 9 1 T 9H 2 4 ww FE 0% my. D nu t. a D1 APPLICATION FILEDFEB.15,1915- J. G. JOHNSON.

MOTOR DRIVEN TiRE PUMP,

APPLICATION HLED 3.15.1915.

A z ncgl'fv-SHEET 2- Pateai .29, 1916 matic tiresof automobiles and likevehicles,

TED STAT JOHN G. JOHNSON, F TAGbMA, WASHINGTON.

moronpnm vnn TIRE-PUMP.

Specification of Letters Patent.

Patented Feb. 29, tore.

Application filed February 15, 1915. Serial No. 3,341.

To all whom it may concern:

Be it known that I, JOHN G. JOHNSON, a citizen of the United States,residing at Tacoma, in the county of Pierce and State of W'a'shington,have invented certain new and useful Improvements in Motor-Driven Tire-Pumps, of which the following is a specification.

This invention relates to improvements in the air supplying devices forthe pneuand has for one of its objects to provide a simply constructeddevice adapted. to be attached to the hub of the wheel and to. the airvalve of the tire and operative, either when the vehicle is at rest orin motion.

Another object of the invention is to provide a simply constructeddevice which may be applied without material modification to automobilesand like vehicles of various forms and sizes.

With these and other objects in view, the invention consists in certainnovel features of construction as hereinafter shown and described andthen specifically pointed out in the claims; and in the drawingsillustrative of the preferred embodiment of the invention, Figure 1 isa. plan view of the framework, traction wheels and engine portion of anautomobile of conventional construction with the improvement applied.Fig. 2 is a side elevation of the parts of the device as shown in Fig. land partly in section. Fig. 3 is an enlarged sectional View of thecoupling device; Fig. 4 is an end View of the parts shown in Fin. 3. Fig. 5 is an enlarged plan view of the air pump device; F ig. 6 is a sideview of the parts shown; in Fig. 5.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The improved device may be applied without material structural change toautomobiles of various forms and makes, but forthe purpose ofillustration is shown applied to a conventional vehicle of thischaractor, and in the drawings the framework of" the automobile isrepresented conventionally at 10, the rear axle at 11, the forward axleat 12, the rear traction wheels at 13, the for ward traction Wheels at14, the engine at and the cranking shaft at 16.. The running or footboards are indicated at 17 and supported from the frame by brackets 18in the usual manner.

The improved device includes a cap 32 arranged to engage over the hub ofthe wheel whose tire is to be inflated, the cap having set screws- 33orother suitable devices, whereby the cap may be coupled to thehuh androtate therewith. Extending from cap 32, is a hollow inner body 34.-enlarged at it? outer end, as shown at 35. Extending rom the body 3-1 isa relatively small branch 37- to the outer end of which a flexible airconductor tube 38 is connected at one end and adapted to be connected atV the other end to the valve of a pneumatic tire, indicated at 39.Engaging against the outer end of the enlarged terminal of the body 34,is an outer hollow body 40, enter-- nally threaded to receive a couplingcollar or sleeve 41, the sleeve having an inwardly clirected innerflange 42 'to engage against the inner end of the enlargement 35. Bythis means, the members 34-40 are coupled and. the member '3234 leftfree to rotate within the coupling member 41. The bore of the member 34and the bore of the member 40 are enlarged to form sockets havingterminal stop shoulders and receive a supporting sleeve 13 which assistsin supporting the members 32 34 in their rotary movement relative to themembers 40-41. Fitting in the outer end of the member 40 is a conduc tortube 44 from which a flexible conductor member 45 leads, the latterbeing con nected at the other end to a branch 46 con nected in turn tothe air pumping mechanism.

The branch 46 leads through the rear member 49 of the engine housingwith its ,terminal in convenient position to receive the conductor 45.The pumping action may be accomplished whether the automobile is at restwith the axle of the wheel to which the coupling mechanism is attachedelevated from the ground, or while the automobile is running over theroad, as may be preferred.

If required, one "of the members 32 and its connections may be attachedto each of the traction wheel hubs and suitable hosev connectionspermanently connected therewith, or onebf the devices only may be em-:ployed and applied to the wheel which is to :be inflated, whenrequired.

The improved device is simple in con-' struction, can be inexpensivelymanufactured and applied and operateaefiectually for the'purposedescribed.

Some'means, such as abrace 47, will be employed toIhold the member 40from turning and coupledr-at as to the adjacent foot board 17, as shown;.The conductor member 45 will preferably be of sufficient length toapplied to the hub of that one single pump and nally and its attachmentsto be any of the wheels, so

one single couenable the cap 32 pling device may be employed for'wheels.

- Having thus described the invention, what is claimed as new is:

1. In a device of the class described, a hollow inner body adapted to becoupled to a wheel hub and having a lateraldischarge an external"annuh'ir bearing and an 1nter-' all the to enga e the bearing of thewith an inwardly directed-flange to engage the bearing of thej I toreceive. on. air supply and provided with an external bearing, saidouter tubular body being ex .te'rnally threaded and 'rovided with aninternal socket terminating in a stop shoulder, aetubular supportingmember seated in said sockets and against-said stop shoulder, a sleevebearin around the confrontin ends of said bodles and internally threadedto engage the threads of the outer body and provided with an inwardlydirected flange inner body, and a brace having clamplng means forcoupiing thdsaxn'e at one en to the bearing of the outer tubular bodyand adapted-to be connected at the other end to the stationary portionof a vehicle.

' In testimonywhereof I affix my signature in presence of two witnesses.

JOHN G. J OHNSUN. FL. s.] Witnesses:

J. C Nonmn, J. A. Wnzmn.

a stop shoulder,

